/// <summary>
/// Draw the on-screen selection, knobs, and handle all interaction logic.
/// </summary>
public void OnSceneGUI()
{
NGUIEditorTools.HideMoveTool(true);
if (!UIWidget.showHandles)
{
return;
}
mWidget = target as UIWidget;
Transform t = mWidget.cachedTransform;
Event e = Event.current;
int id = GUIUtility.GetControlID(s_Hash, FocusType.Passive);
EventType type = e.GetTypeForControl(id);
Action actionUnderMouse = mAction;
Vector3[] handles = GetHandles(mWidget.worldCorners);
NGUIHandles.DrawShadowedLine(handles, handles[0], handles[1], handlesColor);
NGUIHandles.DrawShadowedLine(handles, handles[1], handles[2], handlesColor);
NGUIHandles.DrawShadowedLine(handles, handles[2], handles[3], handlesColor);
NGUIHandles.DrawShadowedLine(handles, handles[0], handles[3], handlesColor);
// If the widget is anchored, draw the anchors
if (mWidget.isAnchored)
{
DrawAnchorHandle(mWidget.leftAnchor, mWidget.cachedTransform, handles, 0, id);
DrawAnchorHandle(mWidget.topAnchor, mWidget.cachedTransform, handles, 1, id);
DrawAnchorHandle(mWidget.rightAnchor, mWidget.cachedTransform, handles, 2, id);
DrawAnchorHandle(mWidget.bottomAnchor, mWidget.cachedTransform, handles, 3, id);
}
if (type == EventType.Repaint)
{
bool showDetails = (mAction == UIWidgetInspector.Action.Scale) || NGUISettings.drawGuides;
if (mAction == UIWidgetInspector.Action.None && e.modifiers == EventModifiers.Control)
{
showDetails = true;
}
if (NGUITools.GetActive(mWidget) && mWidget.parent == null)
{
showDetails = true;
}
if (showDetails)
{
NGUIHandles.DrawSize(handles, mWidget.width, mWidget.height);
}
}
// Presence of the legacy stretch component prevents resizing
bool canResize = (mWidget.GetComponent <UIStretch>() == null);
bool[] resizable = new bool[8];
resizable[4] = canResize; // left
resizable[5] = canResize; // top
resizable[6] = canResize; // right
resizable[7] = canResize; // bottom
UILabel lbl = mWidget as UILabel;
if (lbl != null)
{
if (lbl.overflowMethod == UILabel.Overflow.ResizeFreely)
{
resizable[4] = false; // left
resizable[5] = false; // top
resizable[6] = false; // right
resizable[7] = false; // bottom
}
else if (lbl.overflowMethod == UILabel.Overflow.ResizeHeight)
{
resizable[5] = false; // top
resizable[7] = false; // bottom
}
}
if (mWidget.keepAspectRatio == UIWidget.AspectRatioSource.BasedOnHeight)
{
resizable[4] = false;
resizable[6] = false;
}
else if (mWidget.keepAspectRatio == UIWidget.AspectRatioSource.BasedOnWidth)
{
resizable[5] = false;
resizable[7] = false;
}
resizable[0] = resizable[7] && resizable[4]; // bottom-left
resizable[1] = resizable[5] && resizable[4]; // top-left
resizable[2] = resizable[5] && resizable[6]; // top-right
resizable[3] = resizable[7] && resizable[6]; // bottom-right
UIWidget.Pivot pivotUnderMouse = GetPivotUnderMouse(handles, e, resizable, true, ref actionUnderMouse);
switch (type)
{
case EventType.Repaint:
{
Vector3 v0 = HandleUtility.WorldToGUIPoint(handles[0]);
Vector3 v2 = HandleUtility.WorldToGUIPoint(handles[2]);
if ((v2 - v0).magnitude > 60f)
{
Vector3 v1 = HandleUtility.WorldToGUIPoint(handles[1]);
Vector3 v3 = HandleUtility.WorldToGUIPoint(handles[3]);
Handles.BeginGUI();
{
for (int i = 0; i < 4; ++i)
{
DrawKnob(handles[i], mWidget.pivot == pivotPoints[i], resizable[i], id);
}
if ((v1 - v0).magnitude > 80f)
{
if (mWidget.leftAnchor.target == null || mWidget.leftAnchor.absolute != 0)
{
DrawKnob(handles[4], mWidget.pivot == pivotPoints[4], resizable[4], id);
}
if (mWidget.rightAnchor.target == null || mWidget.rightAnchor.absolute != 0)
{
DrawKnob(handles[6], mWidget.pivot == pivotPoints[6], resizable[6], id);
}
}
if ((v3 - v0).magnitude > 80f)
{
if (mWidget.topAnchor.target == null || mWidget.topAnchor.absolute != 0)
{
DrawKnob(handles[5], mWidget.pivot == pivotPoints[5], resizable[5], id);
}
if (mWidget.bottomAnchor.target == null || mWidget.bottomAnchor.absolute != 0)
{
DrawKnob(handles[7], mWidget.pivot == pivotPoints[7], resizable[7], id);
}
}
}
Handles.EndGUI();
}
}
break;
case EventType.MouseDown:
{
if (actionUnderMouse != Action.None)
{
mStartMouse = e.mousePosition;
mAllowSelection = true;
if (e.button == 1)
{
if (e.modifiers == 0)
{
GUIUtility.hotControl = GUIUtility.keyboardControl = id;
e.Use();
}
}
else if (e.button == 0 && actionUnderMouse != Action.None && Raycast(handles, out mStartDrag))
{
mWorldPos = t.position;
mLocalPos = t.localPosition;
mStartRot = t.localRotation.eulerAngles;
mStartDir = mStartDrag - t.position;
mStartWidth = mWidget.width;
mStartHeight = mWidget.height;
mStartLeft.x = mWidget.leftAnchor.relative;
mStartLeft.y = mWidget.leftAnchor.absolute;
mStartRight.x = mWidget.rightAnchor.relative;
mStartRight.y = mWidget.rightAnchor.absolute;
mStartBottom.x = mWidget.bottomAnchor.relative;
mStartBottom.y = mWidget.bottomAnchor.absolute;
mStartTop.x = mWidget.topAnchor.relative;
mStartTop.y = mWidget.topAnchor.absolute;
mDragPivot = pivotUnderMouse;
mActionUnderMouse = actionUnderMouse;
GUIUtility.hotControl = GUIUtility.keyboardControl = id;
e.Use();
}
}
}
break;
case EventType.MouseDrag:
{
// Prevent selection once the drag operation begins
bool dragStarted = (e.mousePosition - mStartMouse).magnitude > 3f;
if (dragStarted)
{
mAllowSelection = false;
}
if (GUIUtility.hotControl == id)
{
e.Use();
if (mAction != Action.None || mActionUnderMouse != Action.None)
{
Vector3 pos;
if (Raycast(handles, out pos))
{
if (mAction == Action.None && mActionUnderMouse != Action.None)
{
// Wait until the mouse moves by more than a few pixels
if (dragStarted)
{
if (mActionUnderMouse == Action.Move)
{
NGUISnap.Recalculate(mWidget);
}
else if (mActionUnderMouse == Action.Rotate)
{
mStartRot = t.localRotation.eulerAngles;
mStartDir = mStartDrag - t.position;
}
else if (mActionUnderMouse == Action.Scale)
{
mStartWidth = mWidget.width;
mStartHeight = mWidget.height;
mDragPivot = pivotUnderMouse;
}
mAction = actionUnderMouse;
}
}
if (mAction != Action.None)
{
NGUIEditorTools.RegisterUndo("Change Rect", t);
NGUIEditorTools.RegisterUndo("Change Rect", mWidget);
// Reset the widget before adjusting anything
t.position = mWorldPos;
mWidget.width = mStartWidth;
mWidget.height = mStartHeight;
mWidget.leftAnchor.Set(mStartLeft.x, mStartLeft.y);
mWidget.rightAnchor.Set(mStartRight.x, mStartRight.y);
mWidget.bottomAnchor.Set(mStartBottom.x, mStartBottom.y);
mWidget.topAnchor.Set(mStartTop.x, mStartTop.y);
if (mAction == Action.Move)
{
// Move the widget
t.position = mWorldPos + (pos - mStartDrag);
// Snap the widget
Vector3 after = NGUISnap.Snap(t.localPosition, mWidget.localCorners, e.modifiers != EventModifiers.Control);
// Calculate the final delta
Vector3 localDelta = (after - mLocalPos);
// Restore the position
t.position = mWorldPos;
// Adjust the widget by the delta
NGUIMath.MoveRect(mWidget, localDelta.x, localDelta.y);
}
else if (mAction == Action.Rotate)
{
Vector3 dir = pos - t.position;
float angle = Vector3.Angle(mStartDir, dir);
if (angle > 0f)
{
float dot = Vector3.Dot(Vector3.Cross(mStartDir, dir), t.forward);
if (dot < 0f)
{
angle = -angle;
}
angle = mStartRot.z + angle;
angle = (NGUISnap.allow && e.modifiers != EventModifiers.Control) ?
Mathf.Round(angle / 15f) * 15f : Mathf.Round(angle);
t.localRotation = Quaternion.Euler(mStartRot.x, mStartRot.y, angle);
}
}
else if (mAction == Action.Scale)
{
// Move the widget
t.position = mWorldPos + (pos - mStartDrag);
// Calculate the final delta
Vector3 localDelta = (t.localPosition - mLocalPos);
// Restore the position
t.position = mWorldPos;
// Adjust the widget's position and scale based on the delta, restricted by the pivot
NGUIMath.ResizeWidget(mWidget, mDragPivot, localDelta.x, localDelta.y, 2, 2);
ReEvaluateAnchorType();
}
}
}
}
}
}
break;
case EventType.MouseUp:
{
if (e.button == 2)
{
break;
}
if (GUIUtility.hotControl == id)
{
GUIUtility.hotControl = 0;
GUIUtility.keyboardControl = 0;
if (e.button < 2)
{
bool handled = false;
if (e.button == 1)
{
// Right-click: Open a context menu listing all widgets underneath
NGUIEditorTools.ShowSpriteSelectionMenu(e.mousePosition);
handled = true;
}
else if (mAction == Action.None)
{
if (mAllowSelection)
{
// Left-click: Select the topmost widget
NGUIEditorTools.SelectWidget(e.mousePosition);
handled = true;
}
}
else
{
// Finished dragging something
Vector3 pos = t.localPosition;
pos.x = Mathf.Round(pos.x);
pos.y = Mathf.Round(pos.y);
pos.z = Mathf.Round(pos.z);
t.localPosition = pos;
handled = true;
}
if (handled)
{
e.Use();
}
}
// Clear the actions
mActionUnderMouse = Action.None;
mAction = Action.None;
}
else if (mAllowSelection)
{
BetterList <UIWidget> widgets = NGUIEditorTools.SceneViewRaycast(e.mousePosition);
if (widgets.size > 0)
{
Selection.activeGameObject = widgets[0].gameObject;
}
}
mAllowSelection = true;
}
break;
case EventType.KeyDown:
{
if (e.keyCode == KeyCode.UpArrow)
{
NGUIEditorTools.RegisterUndo("Nudge Rect", t);
NGUIEditorTools.RegisterUndo("Nudge Rect", mWidget);
NGUIMath.MoveRect(mWidget, 0f, 1f);
e.Use();
}
else if (e.keyCode == KeyCode.DownArrow)
{
NGUIEditorTools.RegisterUndo("Nudge Rect", t);
NGUIEditorTools.RegisterUndo("Nudge Rect", mWidget);
NGUIMath.MoveRect(mWidget, 0f, -1f);
e.Use();
}
else if (e.keyCode == KeyCode.LeftArrow)
{
NGUIEditorTools.RegisterUndo("Nudge Rect", t);
NGUIEditorTools.RegisterUndo("Nudge Rect", mWidget);
NGUIMath.MoveRect(mWidget, -1f, 0f);
e.Use();
}
else if (e.keyCode == KeyCode.RightArrow)
{
NGUIEditorTools.RegisterUndo("Nudge Rect", t);
NGUIEditorTools.RegisterUndo("Nudge Rect", mWidget);
NGUIMath.MoveRect(mWidget, 1f, 0f);
e.Use();
}
else if (e.keyCode == KeyCode.Escape)
{
if (GUIUtility.hotControl == id)
{
if (mAction != Action.None)
{
Undo.PerformUndo();
}
GUIUtility.hotControl = 0;
GUIUtility.keyboardControl = 0;
mActionUnderMouse = Action.None;
mAction = Action.None;
e.Use();
}
else
{
Selection.activeGameObject = null;
}
}
}
break;
}
}
/// <summary>
/// Handles & interaction.
/// </summary>
public void OnSceneGUI()
{
NGUIEditorTools.HideMoveTool(true);
if (!UIWidget.showHandles)
{
return;
}
Event e = Event.current;
int id = GUIUtility.GetControlID(s_Hash, FocusType.Passive);
EventType type = e.GetTypeForControl(id);
Transform t = mPanel.cachedTransform;
Vector3[] handles = UIWidgetInspector.GetHandles(mPanel.worldCorners);
// Time to figure out what kind of action is underneath the mouse
UIWidgetInspector.Action actionUnderMouse = mAction;
Color handlesColor = new Color(0.5f, 0f, 0.5f);
NGUIHandles.DrawShadowedLine(handles, handles[0], handles[1], handlesColor);
NGUIHandles.DrawShadowedLine(handles, handles[1], handles[2], handlesColor);
NGUIHandles.DrawShadowedLine(handles, handles[2], handles[3], handlesColor);
NGUIHandles.DrawShadowedLine(handles, handles[0], handles[3], handlesColor);
if (mPanel.isAnchored)
{
UIWidgetInspector.DrawAnchorHandle(mPanel.leftAnchor, mPanel.cachedTransform, handles, 0, id);
UIWidgetInspector.DrawAnchorHandle(mPanel.topAnchor, mPanel.cachedTransform, handles, 1, id);
UIWidgetInspector.DrawAnchorHandle(mPanel.rightAnchor, mPanel.cachedTransform, handles, 2, id);
UIWidgetInspector.DrawAnchorHandle(mPanel.bottomAnchor, mPanel.cachedTransform, handles, 3, id);
}
if (type == EventType.Repaint)
{
bool showDetails = (mAction == UIWidgetInspector.Action.Scale) || NGUISettings.drawGuides;
if (mAction == UIWidgetInspector.Action.None && e.modifiers == EventModifiers.Control)
{
showDetails = true;
}
if (NGUITools.GetActive(mPanel) && mPanel.parent == null)
{
showDetails = true;
}
if (showDetails)
{
NGUIHandles.DrawSize(handles, Mathf.RoundToInt(mPanel.width), Mathf.RoundToInt(mPanel.height));
}
}
bool canResize = (mPanel.clipping != UIDrawCall.Clipping.None);
// NOTE: Remove this part when it's possible to neatly resize rotated anchored panels.
if (canResize && mPanel.isAnchored)
{
Quaternion rot = mPanel.cachedTransform.localRotation;
if (Quaternion.Angle(rot, Quaternion.identity) > 0.01f)
{
canResize = false;
}
}
bool[] resizable = new bool[8];
resizable[4] = canResize; // left
resizable[5] = canResize; // top
resizable[6] = canResize; // right
resizable[7] = canResize; // bottom
resizable[0] = resizable[7] && resizable[4]; // bottom-left
resizable[1] = resizable[5] && resizable[4]; // top-left
resizable[2] = resizable[5] && resizable[6]; // top-right
resizable[3] = resizable[7] && resizable[6]; // bottom-right
UIWidget.Pivot pivotUnderMouse = UIWidgetInspector.GetPivotUnderMouse(handles, e, resizable, true, ref actionUnderMouse);
switch (type)
{
case EventType.Repaint:
{
Vector3 v0 = HandleUtility.WorldToGUIPoint(handles[0]);
Vector3 v2 = HandleUtility.WorldToGUIPoint(handles[2]);
if ((v2 - v0).magnitude > 60f)
{
Vector3 v1 = HandleUtility.WorldToGUIPoint(handles[1]);
Vector3 v3 = HandleUtility.WorldToGUIPoint(handles[3]);
Handles.BeginGUI();
{
for (int i = 0; i < 4; ++i)
{
DrawKnob(handles[i], id, resizable[i]);
}
if (Mathf.Abs(v1.y - v0.y) > 80f)
{
if (mPanel.leftAnchor.target == null || mPanel.leftAnchor.absolute != 0)
{
DrawKnob(handles[4], id, resizable[4]);
}
if (mPanel.rightAnchor.target == null || mPanel.rightAnchor.absolute != 0)
{
DrawKnob(handles[6], id, resizable[6]);
}
}
if (Mathf.Abs(v3.x - v0.x) > 80f)
{
if (mPanel.topAnchor.target == null || mPanel.topAnchor.absolute != 0)
{
DrawKnob(handles[5], id, resizable[5]);
}
if (mPanel.bottomAnchor.target == null || mPanel.bottomAnchor.absolute != 0)
{
DrawKnob(handles[7], id, resizable[7]);
}
}
}
Handles.EndGUI();
}
}
break;
case EventType.MouseDown:
{
if (actionUnderMouse != UIWidgetInspector.Action.None)
{
mStartMouse = e.mousePosition;
mAllowSelection = true;
if (e.button == 1)
{
if (e.modifiers == 0)
{
GUIUtility.hotControl = GUIUtility.keyboardControl = id;
e.Use();
}
}
else if (e.button == 0 && actionUnderMouse != UIWidgetInspector.Action.None &&
UIWidgetInspector.Raycast(handles, out mStartDrag))
{
mWorldPos = t.position;
mLocalPos = t.localPosition;
mStartRot = t.localRotation.eulerAngles;
mStartDir = mStartDrag - t.position;
mStartCR = mPanel.baseClipRegion;
mDragPivot = pivotUnderMouse;
mActionUnderMouse = actionUnderMouse;
GUIUtility.hotControl = GUIUtility.keyboardControl = id;
e.Use();
}
}
}
break;
case EventType.MouseUp:
{
if (GUIUtility.hotControl == id)
{
GUIUtility.hotControl = 0;
GUIUtility.keyboardControl = 0;
if (e.button < 2)
{
bool handled = false;
if (e.button == 1)
{
// Right-click: Open a context menu listing all widgets underneath
NGUIEditorTools.ShowSpriteSelectionMenu(e.mousePosition);
handled = true;
}
else if (mAction == UIWidgetInspector.Action.None)
{
if (mAllowSelection)
{
// Left-click: Select the topmost widget
NGUIEditorTools.SelectWidget(e.mousePosition);
handled = true;
}
}
else
{
// Finished dragging something
Vector3 pos = t.localPosition;
pos.x = Mathf.Round(pos.x);
pos.y = Mathf.Round(pos.y);
pos.z = Mathf.Round(pos.z);
t.localPosition = pos;
handled = true;
}
if (handled)
{
e.Use();
}
}
// Clear the actions
mActionUnderMouse = UIWidgetInspector.Action.None;
mAction = UIWidgetInspector.Action.None;
}
else if (mAllowSelection)
{
BetterList <UIWidget> widgets = NGUIEditorTools.SceneViewRaycast(e.mousePosition);
if (widgets.size > 0)
{
Selection.activeGameObject = widgets[0].gameObject;
}
}
mAllowSelection = true;
}
break;
case EventType.MouseDrag:
{
// Prevent selection once the drag operation begins
bool dragStarted = (e.mousePosition - mStartMouse).magnitude > 3f;
if (dragStarted)
{
mAllowSelection = false;
}
if (GUIUtility.hotControl == id)
{
e.Use();
if (mAction != UIWidgetInspector.Action.None || mActionUnderMouse != UIWidgetInspector.Action.None)
{
Vector3 pos;
if (UIWidgetInspector.Raycast(handles, out pos))
{
if (mAction == UIWidgetInspector.Action.None && mActionUnderMouse != UIWidgetInspector.Action.None)
{
// Wait until the mouse moves by more than a few pixels
if (dragStarted)
{
if (mActionUnderMouse == UIWidgetInspector.Action.Move)
{
NGUISnap.Recalculate(mPanel);
}
else if (mActionUnderMouse == UIWidgetInspector.Action.Rotate)
{
mStartRot = t.localRotation.eulerAngles;
mStartDir = mStartDrag - t.position;
}
else if (mActionUnderMouse == UIWidgetInspector.Action.Scale)
{
mStartCR = mPanel.baseClipRegion;
mDragPivot = pivotUnderMouse;
}
mAction = actionUnderMouse;
}
}
if (mAction != UIWidgetInspector.Action.None)
{
NGUIEditorTools.RegisterUndo("Change Rect", t);
NGUIEditorTools.RegisterUndo("Change Rect", mPanel);
if (mAction == UIWidgetInspector.Action.Move)
{
Vector3 before = t.position;
Vector3 beforeLocal = t.localPosition;
t.position = mWorldPos + (pos - mStartDrag);
pos = NGUISnap.Snap(t.localPosition, mPanel.localCorners,
e.modifiers != EventModifiers.Control) - beforeLocal;
t.position = before;
NGUIMath.MoveRect(mPanel, pos.x, pos.y);
}
else if (mAction == UIWidgetInspector.Action.Rotate)
{
Vector3 dir = pos - t.position;
float angle = Vector3.Angle(mStartDir, dir);
if (angle > 0f)
{
float dot = Vector3.Dot(Vector3.Cross(mStartDir, dir), t.forward);
if (dot < 0f)
{
angle = -angle;
}
angle = mStartRot.z + angle;
angle = (NGUISnap.allow && e.modifiers != EventModifiers.Control) ?
Mathf.Round(angle / 15f) * 15f : Mathf.Round(angle);
t.localRotation = Quaternion.Euler(mStartRot.x, mStartRot.y, angle);
}
}
else if (mAction == UIWidgetInspector.Action.Scale)
{
// World-space delta since the drag started
Vector3 delta = pos - mStartDrag;
// Adjust the widget's position and scale based on the delta, restricted by the pivot
AdjustClipping(mPanel, mLocalPos, mStartCR, delta, mDragPivot);
}
}
}
}
}
}
break;
case EventType.KeyDown:
{
if (e.keyCode == KeyCode.UpArrow)
{
NGUIEditorTools.RegisterUndo("Nudge Rect", t);
NGUIEditorTools.RegisterUndo("Nudge Rect", mPanel);
NGUIMath.MoveRect(mPanel, 0f, 1f);
e.Use();
}
else if (e.keyCode == KeyCode.DownArrow)
{
NGUIEditorTools.RegisterUndo("Nudge Rect", t);
NGUIEditorTools.RegisterUndo("Nudge Rect", mPanel);
NGUIMath.MoveRect(mPanel, 0f, -1f);
e.Use();
}
else if (e.keyCode == KeyCode.LeftArrow)
{
NGUIEditorTools.RegisterUndo("Nudge Rect", t);
NGUIEditorTools.RegisterUndo("Nudge Rect", mPanel);
NGUIMath.MoveRect(mPanel, -1f, 0f);
e.Use();
}
else if (e.keyCode == KeyCode.RightArrow)
{
NGUIEditorTools.RegisterUndo("Nudge Rect", t);
NGUIEditorTools.RegisterUndo("Nudge Rect", mPanel);
NGUIMath.MoveRect(mPanel, 1f, 0f);
e.Use();
}
else if (e.keyCode == KeyCode.Escape)
{
if (GUIUtility.hotControl == id)
{
if (mAction != UIWidgetInspector.Action.None)
{
Undo.PerformUndo();
}
GUIUtility.hotControl = 0;
GUIUtility.keyboardControl = 0;
mActionUnderMouse = UIWidgetInspector.Action.None;
mAction = UIWidgetInspector.Action.None;
e.Use();
}
else
{
Selection.activeGameObject = null;
}
}
}
break;
}
}